#include <iostream>

using std::cout;
class Singleton
{
public:
    
private:
    static Singleton* p;
    int _a;
    int _b;
};

Singleton* Singleton::p = nullptr;

int main(int argc, char const *argv[])
{
    cout << sizeof(Singleton) << "\n";
    getchar();
    return 0;
}

